Cook lasagna noodles to desired doneness. Drain and rinse with water. Heat oven to 350F. In a bowl combine milk, butter, flour and spices, blend well. Cook over medium heat until mixture boils and thickens. (I find it easier to use a double boiler to make the sauce.) Reserve 3/4 cup for top layer of lasagna. Stir spinach into the remaining sauce.

In a bowl, combine ricotta and mozzarella. Spread 1/2 cup of spinach sauce in the bottom of a 13X9 inch (3 quart) baking dish. Top with 3 lasagna noodles, half of the cheese mixture and half of the remaining spinach sauce, repeat layers. Top with the last 3 noodles and reserved 3/4 cup of sauce. Sprinkle with Parmesan or Romano cheese.